Retry Policy. The explicit rule for when failed, delayed, or uncertain work may be attempted again, when it must be queued, when it must stop, and when a circuit breaker or human review must take over. A retry policy turns "try again" into governed behavior.
Retries are safe only when the effect is idempotent, the idempotency key identifies the same intended effect, the approval or authority is still current, the evidence and payload still match, and the retry cannot duplicate money, messages, reservations, relationship changes, security actions, or other consequential effects. Otherwise the policy must refuse, reconcile, or require review.